Crane



Feb. 2, 1932. E. H LICHTENBERG 1,343,773

Filed May 17, 1950 2 Sheets-Sheet 1 Feb. 2, 1932. E. H. LICHTENBERG CRANE v Filed May 17 1930 2 Sheets-Sheet 2 Patented Pa. 2, 193 2 PANY, or I WA KEE, WISCONSIN; JKYCORPORATIQN CRANE Application filed May 17, 930. sci-st is." 453,275, 7

This invention relates to crane excavators p p p 4 I sary, as well a's the applicatlon of laggings are "often applled to' these drum memand contemplates the provision of an excavator of this type wherein the hoisting drums are located exterior of the cab or body to permit maximum free range of movementfor the cables controlled therefrom while, at the same time the bearings and'operating mechanism for the drums are fully housed and protected. a

In crane excavators as heretofore con-. struct-ed, it has been customary to mount the cable drums inside of the cab body and extend the cables through openings orslots formed in the wall of the body, or else provide hinged covers, trap doors, and other devices to accommodatethe cables, which require a Wide range of movement during the hoisting and racking-in and crowding-out operations. This construction has always proved objectionable in that thebody or cab of the excavator would leak during rainy weather and expose the operatoras well as the machinery in the cab to the elements.

In the present inventiomthe body or cab 1 of the excavator is provided with an open recess or well 1n which the cable drums are mounted, while the operating mechanism for the drums is housed in the cab, so that the cable has an unlimited range of movement without requiring any openings, doors, or the like to be formed in the cab body.

There is found to be practically no advantage in covering the drum mechanism .by

which the hoisting and other operationsof the excavating deviceare controlled and ef fected incident'to the action of the-dipper shovel, dragline, clamshell and'other classes of cable and bucket equipmentswhich are employedin conjunction with excavators of the kind to which this invention relates.

Therefore it is desirable for the purpose of saving expense and difficulties incident to building machines, that the drum mechanism be not housed, the exposure of-the cable surfaces enabling ready attachmentof the cables which illustrated in Figure 2 at ERICH H. LIGHTENIBERG, or MILWAUKEE, wrscolvsm; ASSIGNOR To KOEHRING 00M andsubsti tutio n of"othericableslwherefnecesb'ersfl" In, t ra ing "-i.

' l1 Eigure his a; perspective viewof a crane excavator embody ng the features of the present invention 1 taken on the line of-Figure 1, and

"Fig re 3'is 'a' view similarto Figure-2,

'takenontheline 33 ofFigure 1. j

Th'ej'numeralb generally designates the having abody of cab 6 -mounted thereon, said cabj beingjformed with a recess or weir-7.

be constructed of any suitable material usualfFigure; 2 is a hfrizontalsectional view tractor or crawler structure of theexcavator, i

sheet metal, and the side flanges 8a and 9a of the drums 8 and 9 are preferably mounted in relatively snug openings formed in the sidewalls l4 ofth'e well '7 and the shafts'lO for the cable drums project at; opposite extrcmit ies through the side'walls'15a ofa supporting housing or casing generally indicated at 15, the walls of which should be of substantial construction in order toprovide'a supifpor't of sufiicient strength' to. withstandthe weightof thejcable drums 8 and 9. An engine driving the drums is diagrammatically and fully housed and protected,jand are acces'sible from theinterior of the cab. The cables wound onthedrum are thuspermitted It will thuso be seenth'at the cable drums i are mounted exterior of thecab while the operating parts and controls are under cover It will be apparent from the foregoing that according to the construction of my crane with the cable drums exposed, the latter are readily accessible to the operators of the machine for purposes of changing the cables when necessary, as when a cable is worn out, or a different type of cable and bucket equipment is required to be applied to the machine. Also the drums are so exposed that they may be readily supplied with drum laggings for increasing their diameter, or such laggings may be readily removed, when the matter of changing the cable line ofttimes becomes importantto the action of a particular type of excavator equipment to be used for the purposes of the crane operating mechanism.

Having thus described my invention, what 7 T I claim as new and desire to secureby Letters Patent of the United States, is

1. A crane excavator of the type compriscarried thereon, operating mechanism within the housing for boom and cable apparatus that may be mounted upon the base, said cabwhich the boom and cable apparatus may be mounted, said well extending vertically through the cab-like housing, together with cable drum mechanism supported in the well and leading to the operating mechanism within the cab-like housing, said cab-like housing containing therein an operating station.

2. In an excavating crane'of the type comprislng a base, and a cab-like housing supported on the base and containing an operating station, operating machinery within the vinga supporting base, and a cab-like housing likehousing includinga well at the end at cab-like housing, said cab-like housing having a vertical well extending therethrough and open at one end ofl'the housing at which boom and cable apparatusare mounted, cable drum mechanism extending across the said vertical well and connected with the operating machinery within the housing, the cabv like housing forming a general enclosure for the operating statio-n and the operating machinery, and the well aforesaid being formed by walls of the housing maintaining the latter a substantially enclosed structure but enabling the drum mechanism in the well to remain exposed. v

3. A crane excavator providedwith a recessed body closed on all sides and having within it intercommunic ating compartments for an operator and operating mechanism, cable drums disposed in said recess and provided with shafts projecting through the walls thereofinto the compartments within the said body, and mechanism for driving said drums connectedto said shafts interiorly of said body.

. 4. A crane excavato-rprovided with a. body I formed with inter-communicating compartments withan open well therebetween, op- 

